Kubernetes - JSON Path

Application Failure

draw a map or chart

Check Accessibility

curl http://web-service-ip:node-port kubectl get endpoint

Check Service Status

kubectl describe service web-service

Check POD

kubectl get pod
kubectl describe pod web
kubectl logs web -f --previous 

Check Dependent Service/Apps

kubectl get svc
kubectl describe svc

Control Plane Failure

Check Node Status

kubectl get nodes
kubectl get pods

Check Controlplane Pods

kubectl get pods -n kube-system

Check Controlplane Services

service kube-apiserver status
service kube-controller-manager status
service kube-scheduler status

service kubelet status
service kube-proxy status

Check Service Logs

kubectl logs kube-apiserver-master -n kube-system
sudo journalctl -u kube-apiserver

Worker Node Failure

CHeck Node Status

kubectl get nodes
kubectl describe node worker-1

Check Node

top
df -h

Check Kubelet Status

service kubelet status
sudo jornalctl -u kubelet

Check Certificates

openssl x509 -in /var/lib/kubelet/worker-1.cert -text

Networking

JSONPATH

https://mmumshad.github.io/json-path-quiz/index.html#!/?questions=questionskub1 https://mmumshad.github.io/json-path-quiz/index.html#!/?questions=questionskub2 .